Exemplos de ata_id_has_dma em C++ (Cpp)

Exemplo n.º 1

Arquivo: ide.c Projeto: percy-g2/rowboat-kernel

static int set_using_dma(ide_drive_t *drive, int arg)
{
#ifdef CONFIG_BLK_DEV_IDEDMA
    int err = -EPERM;

    if (arg < 0 || arg > 1)
        return -EINVAL;

    if (ata_id_has_dma(drive->id) == 0)
        goto out;

    if (drive->hwif->dma_ops == NULL)
        goto out;

    err = 0;

    if (arg) {
        if (ide_set_dma(drive))
            err = -EIO;
    } else
        ide_dma_off(drive);

out:
    return err;
#else
    if (arg < 0 || arg > 1)
        return -EINVAL;

    return -EPERM;
#endif
}

Exemplo n.º 2

Arquivo: pata_bfin.c Projeto: Analias/SNOWLeo-SDR-1

static void bfin_ata_identify(struct ata_port *ap, int dev)
{
	void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr;
	u8 status = 0;
	static u16 iobuf[ATA_SECTOR_WORDS];
	u64 n_sectors = 0;
	hd_driveid_t *iop = (hd_driveid_t *)iobuf;

	memset(iobuf, 0, sizeof(iobuf));

	if (!(ap->dev_mask & (1 << dev)))
		return;

	debug("port=%d dev=%d\n", ap->port_no, dev);

	bfin_dev_select(ap, dev);

	status = 0;
	/* Device Identify Command */
	write_atapi_register(base, ATA_REG_CMD, ATA_CMD_ID_ATA);
	bfin_check_altstatus(ap);
	udelay(10);

	status = bfin_ata_busy_wait(ap, ATA_BUSY, 1000, 0);
	if (status & ATA_ERR) {
		printf("\ndevice not responding\n");
		ap->dev_mask &= ~(1 << dev);
		return;
	}

	read_atapi_data(base, ATA_SECTOR_WORDS, iobuf);

	ata_swap_buf_le16(iobuf, ATA_SECTOR_WORDS);

	/* we require LBA and DMA support (bits 8 & 9 of word 49) */
	if (!ata_id_has_dma(iobuf) || !ata_id_has_lba(iobuf))
		printf("ata%u: no dma/lba\n", ap->port_no);

#ifdef DEBUG
	ata_dump_id(iobuf);
#endif

	n_sectors = ata_id_n_sectors(iobuf);

	if (n_sectors == 0) {
		ap->dev_mask &= ~(1 << dev);
		return;
	}

	ata_id_c_string(iobuf, (unsigned char *)sata_dev_desc[ap->port_no].revision,
			 ATA_ID_FW_REV, sizeof(sata_dev_desc[ap->port_no].revision));
	ata_id_c_string(iobuf, (unsigned char *)sata_dev_desc[ap->port_no].vendor,
			 ATA_ID_PROD, sizeof(sata_dev_desc[ap->port_no].vendor));
	ata_id_c_string(iobuf, (unsigned char *)sata_dev_desc[ap->port_no].product,
			 ATA_ID_SERNO, sizeof(sata_dev_desc[ap->port_no].product));

	if ((iop->config & 0x0080) == 0x0080)
		sata_dev_desc[ap->port_no].removable = 1;
	else
		sata_dev_desc[ap->port_no].removable = 0;

	sata_dev_desc[ap->port_no].lba = (u32) n_sectors;
	debug("lba=0x%lx\n", sata_dev_desc[ap->port_no].lba);

#ifdef CONFIG_LBA48
	if (iop->command_set_2 & 0x0400)
		sata_dev_desc[ap->port_no].lba48 = 1;
	else
		sata_dev_desc[ap->port_no].lba48 = 0;
#endif

	/* assuming HD */
	sata_dev_desc[ap->port_no].type = DEV_TYPE_HARDDISK;
	sata_dev_desc[ap->port_no].blksz = ATA_SECT_SIZE;
	sata_dev_desc[ap->port_no].lun = 0;	/* just to fill something in... */

	printf("PATA device#%d %s is found on ata port#%d.\n",
		ap->port_no%PATA_DEV_NUM_PER_PORT,
		sata_dev_desc[ap->port_no].vendor,
		ap->port_no/PATA_DEV_NUM_PER_PORT);
}